4x4 Troubles - Chevy Colorado & GMC Canyon
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post #1 of 3 (permalink) Old 12-25-2016, 05:55 PM Thread Starter
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4x4 Troubles

Hello all and Happy Holidays.
I just bought myself a 2005 GMC Canyon Club Cab with over 120,000 miles and I am having a problem driving in 4 wheel drive. If I am in 4WD and I am going straight on dry pavement, I can feel like the wheels fighting each other. I cannot drive more than 15 mph. Once back in 2 wd drive it's all fine.
Before I bought the truck I knew that it has been in a front end accident according to CarFax, just don't know how badly. I just replaced both inner and outer tie rods on both sides and I noticed on the front differential some writing that would indicate it came from a salvage yard. According to my RPO code; GT5, which is a 4.10 gear ratio for the rear axle. Could it be possible that someone replace the front differential with a different gear ratio? Shouldn't the front and the rear gear ratios be the same?
I do have to get underneath the truck and count the revolutions of the wheel in relation to the front driveshaft, but I can wait until the snow clears.
Any help would be greatly appreciated.

Bob T
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post #2 of 3 (permalink) Old 12-25-2016, 08:16 PM
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Yes front and rear ratios have to be the same.

2011 Colorado CC Z71 2LT 4X4 3.7L with a few mods
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post #3 of 3 (permalink) Old 12-26-2016, 07:05 AM
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NEVER USE 4wd on dry pavement. Test it on a low traction surface, snow, ice, sand or gravel.

Use of 4HI or 4LO and 4HI Lock or 4LO Lock is intended for use on a low traction surface such as snow, ice, mud or sand. On a low traction surface, the differences in front and rear axle speeds will not have as much effect on binding because of the lower traction levels between the surface and the contact patch of the tires. On a high traction surface, the higher traction levels will create more binding and noise in the driveline.

Tire rolling rates can be a major factor in operational characteristics of 4wd vehicles. Consider the following important items:

• All tires are the same size and brand. Tires of different brands may have different circumferences (or radius) even if they are the same size.

• Tires are set to factory recommended pressures. A tire with low air pressure will roll at a different rate.

• All tires have approximately equal amounts of wear. Tires with different amounts of wear will roll at different rates.

• All tires are the same tread type. Don't mix on-off road, all-season or street tires on the same truck as they may have different circumferences and roll at different rates.

• One or more of the tires may show small, short scratches around the circumference of the tire tread. The tire "scuffing" on the road surface causes these scratches.


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Last edited by Z15_34396; 12-26-2016 at 07:22 AM. Reason: Revise and extend my remarks...
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